Rhizobia Promote Rice (Oryza sativa L.) Growth: First Evidence in Cuba

Forte, Ionel Hernández; Garcia, Magalı́

doi:10.1007/978-3-030-17597-9_10

Cited by 9 publications

(4 citation statements)

References 34 publications

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“…Investigaciones previas demostraron que algunas cepas de las que se emplearon en la presente investigación, como Rpr11 y Rpr2, producen compuestos indólicos del tipo AIA (Hernández Forte & Nápoles García, 2019). La producción de estos compuestos podría haber influido en la germinación de las semillas de ambos cultivares de cafeto.…”

Section: Discussionunclassified

Los rizobios incrementan la germinación de las semillas de Coffea arabica y Coffea canephora. Segunda evidencia en Cuba

et al. 2021

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Introducción. La lenta y asincrónica germinación de las semillas de café afecta la obtención de plántulas e incrementa los gastos asociados a la producción. La aplicación de rizobacterias promotoras del crecimiento vegetal (PGPRs) ha mostrado ser una alternativa ante esta problemática. Objetivo. Evaluar el efecto de la inoculación de rizobios en la germinación de dos cultivares de cafeto en condiciones controladas y productivas. Materiales y métodos. Durante enero y febrero del 2020, se desarrollaron dos experimentos en la Universidad de Oriente, Cuba, en el que se emplearon diez cepas de rizobios, provenientes de leguminosas y gramíneas, y dos cultivares de cafeto de importancia económica en Cuba: Coffea arabica cultivar (cv.) Isla 5-15 y Coffea canephora Pierre ex Froehner cultivar (cv.) Robusta. Los experimentos se realizaron uno en condiciones controladas, donde la germinación de las semillas se evaluó en placas Petri y otro donde se emplearon canteros pregerminadores. En ambos experimentos se empleó un diseño completamente aleatorizado y se realizó un análisis de varianza. Resultados. En condiciones controladas, la inoculación de las cepas Rpr11, Rpr2, 1-2, ICA8001 y Can3, incrementaron el porcentaje de germinación, la energía germinativa, el índice de germinación, el índice de velocidad de germinación y el índice de vigor. En los canteros pregerminadores, los inoculantes a base de las cepas Rpr2 y Rpr11 produjeron los mayores porcentajes de emergencia y de energía de germinación. Conclusión. Las cepas Rpr2 y Rpr11 de Rhizobium, incrementaron la germinación de las semillas de dos variedades de cafeto.

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Section: Discussionunclassified

Los rizobios incrementan la germinación de las semillas de Coffea arabica y Coffea canephora. Segunda evidencia en Cuba

et al. 2021

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“…With the T4 treatment, the huacle chili seeds recorded a high germination percentage (99.6%), as a result of the previous management, and no impact by Fusarium spp. However, Nápoles García, 2019;Anguiano Cabello et al, 2019) and, as antagonists of Fusarium spp., they protect the huacle chili seeds (Martínez et al, 2013;Rojas et al, 2017, Pérez;García-Godos, 2019;Vásconez et al, 2022;Miguel-Ferrer et al, 2021).…”

Section: Resultsmentioning

confidence: 99%

“…One way to counteract these phytosanitary problems is the application of antagonistic microorganisms. Species such as Rhizobium -which is obtained from rice (Oryza sativa L.) plants-produce high concentrations of indole compounds, polyhydroxybutyrate, and ammonium, and solubilize calcium phosphate (Hernández Forte and Nápoles García, 2019). Fungi of the genus Trichoderma and bacteria of the genus Bacillus compete for the substrate, parasitize organisms producing lytic enzymes that degrade the cell wall of phytopathogens (particularly, Fusarium), and stimulate the growth and development of plant roots, improving the uptake of nutrients and water (Martínez et al, 2013;Vásconez et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Emergence and growth of huacle chili seedlings (Capsicum annuum L.) with the use of biological formulations in commercial plot soil.

Hernandez Rosas,

Hernández-Rosas,

Schettino-Salomón

et al. 2023

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Objective: To evaluate the effect of biological control agents (BCA) and two biological formulations (Bio-Terra and Bio-CNPR) against the phytopathogens found in the soil of huacle chili (Capsicum annuum) plantations, in order to obtain healthy seedlings. Design/Methodology/Approach: The following design variables were evaluated: germination (%), disease incidence (%), and survival (%). Stem height and root length were also evaluated. The experimental unit was a tray with n=30 seedlings per each treatments (T0, T1, T2, T3, and T4) and four repetitions. An analysis of variance (ANOVA) was used. Tukey’s mean test was applied (using the Minitab Statistical program version 20.0) in units that presented differences (p≤0.05). Results: The phytopathogenic microorganism Fusarium spp. was isolated from the soil of the plots cultivated with huacle chili. The T1 treatment recorded the best inhibitory effect against Fusarium spp.: it had 92.2% germination, 18.3% incidence of Fusarium spp., and 82% surviving seedlings (with an average height of 16 cm and a root length of 7.9 cm). The sterilization of the soil lead to T4 having the best results in germination, incidence, and survival, since Fusarium spp. did not damage huacle chili seedlings. In contrast, T0 did not prosper neither with BCA nor with biological products, since all the seedlings in non-sterile soil died. Study Limitations/Implications: A plastic barrier was placed between the trays with the chili seedlings to avoid cross-contamination between treatments. Findings/Conclusions: T1 (the BCA with nitrogen-fixing bacteria and B. subtilis) recorded the best counteracting results against the damage generated by Fusarium spp. Their antagonism allowed a high percentage of survival of huacle chili seedlings and encouraged plant development through the best root growth and height of the seedlings.

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“…Previously, it was demonstrated that Rhizobium sp. The Rpr2 strain produces hormones such as indol-acetic acid, which increase the growth of the root system by increasing the size, weight, number of branches and surface area in contact with the soil [28,40]. Then, the inoculation of this bacteria could explain the decrease in P content in the substrate shown in the inoculated treatments (Table 4).…”

Section: Discussionmentioning

confidence: 99%

Rhizobium Grants the Reduction of Phosphate Fertilization during the Production of Coffee Seedlings

Vinent

Aguilera

et al. 2023

Sustainability

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The use of bacterial inoculants is an attractive alternative that could reduce the consumption of chemical fertilizers in crops. In the production system of quality coffee seedlings, it is essential to achieve an adequate balance of nutrients that allows for healthy plants that are resistant to subsequent handling. The objective of this work was to evaluate the effect of Rhizobium sp. inoculation on the growth, nutrition and quality of coffee seedlings cultivated with different doses of phosphoric fertilization. Inoculation tests were carried out under nursery conditions using Coffea arabica L. cv. “Isla 5–15” and Coffea canephora Pierre ex Froehner cv. “Robusta” seeds inoculated with the Rhizobium sp. Rpr2 strain. Sixty days after sowing, the hypocotyldonal graft was performed, and the resulting plants were also treated with the bacterial inoculant. Plants were then planted in substrate with different doses of phosphorus (P): 25, 50, 75 and 100%. At seven months of cultivation, variables of growth (plant height, stem diameter, number of leaf pairs, main root length, root volume, dry mass of the aerial part, root and total), phosphoric nutrition (leaf and root P contents) and posture quality index were evaluated. The inoculation stimulated the aerial part (37%), root growth (34%), the quality index of the grafted postures (30%), and phosphorus absorption (42%) and allowed a decrease from 25 to 75% of the mineral fertilizer. For the first time in Cuba, the benefits of rhizobial inoculation on the nutrition and quality of coffee seedlings were demonstrated. The inoculation of grafted coffee seedlings with Rhizobium sp. Rpr2 through the inoculation method proposed in this study can be recommended as a new easy, cost-effective and efficient inoculation approach to obtain additional benefits for coffee growth, improving the absorption of nutritive elements and the quality characteristics of the coffee seedlings.

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Rhizobia Promote Rice (Oryza sativa L.) Growth: First Evidence in Cuba

Cited by 9 publications

References 34 publications

Los rizobios incrementan la germinación de las semillas de Coffea arabica y Coffea canephora. Segunda evidencia en Cuba

Los rizobios incrementan la germinación de las semillas de Coffea arabica y Coffea canephora. Segunda evidencia en Cuba

Emergence and growth of huacle chili seedlings (Capsicum annuum L.) with the use of biological formulations in commercial plot soil.

Rhizobium Grants the Reduction of Phosphate Fertilization during the Production of Coffee Seedlings

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